EP0360946A1 - Coupling for butt-joining tubes - Google Patents

Coupling for butt-joining tubes Download PDF

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Publication number
EP0360946A1
EP0360946A1 EP88402660A EP88402660A EP0360946A1 EP 0360946 A1 EP0360946 A1 EP 0360946A1 EP 88402660 A EP88402660 A EP 88402660A EP 88402660 A EP88402660 A EP 88402660A EP 0360946 A1 EP0360946 A1 EP 0360946A1
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EP
European Patent Office
Prior art keywords
sleeve
tubes
rings
tube
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88402660A
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German (de)
French (fr)
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EP0360946B1 (en
Inventor
Yves Levivier
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Individual
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Individual
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Publication date
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Priority to AT88402660T priority Critical patent/ATE71197T1/en
Publication of EP0360946A1 publication Critical patent/EP0360946A1/en
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Publication of EP0360946B1 publication Critical patent/EP0360946B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F16L17/04—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket with longitudinally split or divided sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/113—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a rigid sleeve

Definitions

  • the invention relates to a connector for smooth tubes receiving a pressurized fluid, connector fixed to the end of two tubes by clamping, without welding or screwing, this connector comprising an outer sleeve forming a chamber receiving a shaped seal. of tubing terminated at each end by a lip which is applied in leaktight manner against the corresponding end of tubing engaged in the fitting, under the effect of the pressure of the fluid circulating in the tubing, of the rings of flu housed in the sleeve to grip against the tubes, a sleeve tightening means to block the fitting on the tubes.
  • Known fittings of this type include an outer sleeve forming a chamber which receives a tube-shaped seal terminated at each end by a lip which is applied sealingly against one end of the tube and under the effect of internal springs and the pressure of the fluid circulating in the tubes. At the end, it is provided each time an influenza ring pressing against the sleeve and whose grippers come into the corresponding end of the two tubes to be connected, the grippers of the two rings acting in opposite directions. Thus, under the effect of expansion, the end of the tube can only penetrate into the fitting, while reverse movement is prohibited by the grippers.
  • Such fittings are advantageous because they allow tubes to be easily and dismountably connected, but one of their drawbacks lies in the fact that they do not allow the effects of the expansion of the tubes to be absorbed so that it expansion elements are required on the pipes.
  • the object of the present invention is to remedy the drawbacks of known solutions and proposes to create a connector for simple manufacture and assembly which makes it possible either to absorb the effects of expansion of the tubes without requiring an expansion joint or to ensure excellent hanging on the end of the two tubes to be connected.
  • the invention relates to a connector of the above type characterized in that at least one of the ends of the sleeve is provided with a peripheral housing for receiving two open-action gripper rings with opposite action, to block the connection integrally on the corresponding end of the tube to be connected.
  • the connector can be blocked either on one or on both ends of the tubes to be connected.
  • the connections make it possible to absorb the misalignments of the connected tubes.
  • the connector according to the invention is very light and compact, which is advantageous or even decisive in many applications.
  • only one of the ends of the sleeve is provided with a peripheral housing for receiving two opposing action rings for grippers to lock the connection integrally on the corresponding end of the tube to be connected, the end of the other tube able to slide freely in the sleeve while being only in contact with the corresponding lip of the seal.
  • the sleeve is in the form of two shells joined by the bolts.
  • the two ends of the sleeve are provided with a peripheral housing to each receive two opposing-action gripper rings for blocking the connection integrally on the corresponding end of each of the two tubes to be connected.
  • the housing has bearing surfaces to support the fluke rings in inclined positions to exert an opposite action.
  • the bearing surfaces of the peripheral housing are formed by the walls of the housing with trapezoidal section.
  • the two claw rings of each housing are separated in the housing by a rod of circular or trapezoidal section.
  • the return is provided with an electrical insulating packing with U-shaped section.
  • the connector thus makes it possible to eliminate extremely complicated and expensive insulating connectors, which are difficult to install and whose reliability is reduced by their complexity.
  • the seal according to the invention is due to vibrations and pressures up to 40 bars. Its size is extremely small. Sized appropriately, it can be used on any pipe and its installation is very fast. It does not require preparation of the ends of the tubes and also makes it possible to absorb a certain angular or parallax offset from the end of the tubes.
  • a first embodiment sation of a connector of the invention is intended to join two ends 1 and 2 of two tubes. Intentionally the ends of the two tubes 1, 2 are not shown to be contiguous, but spaced apart by a distance e , which varies depending for example on the expansion or contraction of the tubes.
  • This connection consists of an outer sleeve 3 terminated at one of its ends, for example the left end, by a peripheral housing 4 receiving two open, gripped rings 5 and 6.
  • the two rings are separated by an open rod 7 of trapezoidal or circular section, the walls 8 and 9 of the peripheral housing 4 being themselves inclined, the section of the housing being trapezoidal.
  • the section of the housing can be in the form of a triangle, a polygon or even a curved shape, without such shapes being limiting.
  • these open rings terminate at their lower part with sharp edges 10, 11 forming claws. These edges are intended to sink into the wall of the end of the tube 1 during the axial tightening of the man chon 3.
  • the outer sleeve 3 is provided with a peripheral housing 12 of a certain axial length containing a seal 13 formed by an elastic sleeve terminated at each end by lips 14, 15.
  • the lips 14, 15 are supported one on the end of the tube 1, the other on the end of the tube 2.
  • a cavity 16 into which arrives the pressurized fluid circulating in the tubes 1, 2.
  • the pressure applies the elastic sleeve and the lips 14, 15 of the seal 13 against the sleeve 3, and against the ends of the tubes 1, 2 thus ensuring sealing.
  • springs 30, 31 are provided in addition.
  • the outer sleeve 3 is terminated by a return 17 which serves as a support for the right part of the seal 13, the contour of the annular housing 4 serving as a left support for the seal 13.
  • the end of the connector located at the level of the tube 2 provides only a sealing function but not a blocking function.
  • the tubes 1, 2 can therefore approach or move apart as a function of the expansions or contractions generated by the variations in temperature of the fluid or of the surrounding temperature.
  • the connector not only provides a simple seal between two ends of the tubes, but it also makes it possible to absorb the expansions.
  • the sleeve 3, the claw rings 8, 9 and the ring 7 are peripheral members risks, open, that is to say non-continuous so as to allow the radial compression of the sleeve 3 for example by bolts, to ensure the insertion of the rings of influenza 8, 9 in the end 1 of the tube and by following the blocking of the fitting on this end of the tube.
  • FIG. 2 shows in section an alternative embodiment of the outer sleeve.
  • This sleeve consists of two parts 20, 21 terminated at each end by lugs 22, 23 and 24, 25 joined by bolts 26, 27.
  • each part 20, 21 ends in a guide surface 28, 29 cooperating with corresponding guide surfaces not shown on the other part to ensure a certain continuity at the junction of the two parts 20, 21 closing the gap between the legs 22, 23, and 24, 25.
  • This sleeve can also be produced in two parts articulated to one another by a hinge and the other ends of which are joined by tightening bolts.
  • Figure 3 shows another embodiment of the invention, ensuring the locking of the connector on the end of each of the two tubes 101, 102, to be joined.
  • the connector comprises an outer sleeve 103 terminated at each of its ends by a peripheral housing 104A, 104B each receiving two flange rings 105A, 106A; 105B, 106B, the rings are open and separated by an open ring 107A, 107B of section, for example circular or trapezoidal.
  • the walls 108A, 109A; 108B, 109B of the housings 104A, 104B form inclined bearing surfaces for the flu rings.
  • the walls of the housings 104A, 104B can themselves form the bearing surfaces as in the present example; the section of the peripheral housings is then preferably triangular or trapezoidal.
  • the fluke rings 108A, 109A, 108B, 109B are analogous or identical to the fluke rings of the first embodiment; they end at their lower part with ridges 110A, 111A, 110B, 111B forming grippers which hang in the wall of the tubes during the axial tightening of the sleeve 103.
  • the sleeve 103 also has a relatively long peripheral housing 112 relative to the parts provided with the peripheral housings 104A, 104B.
  • the housing receives a seal 113 of the type examined above, with two lips 114, 115 resting on the end of each tube 101, 102.
  • the seal also includes a cavity 116 and rods 130, 131 can be provided for the lips 114, 115.
  • the second embodiment of the connector according to the invention is particularly suitable for applications in which the connector must be fixed integrally to the ends of the tubes without having to compensate for contractions and expansions, the latter being received by a particular means provided on the pipes.
  • Figure 4 shows another variant of the invention constituting an electrically insulating connection.
  • this variant we have used the same references as in FIG. 1 to designate the same elements, the description of which will not be repeated.
  • the return 17A defines an opening of diameter significantly larger than the diameter of the tube 2.
  • the edge of the return 17A bordering the opening is rounded or at a fillet, that is to say without sharp edges .
  • the seal 13 is extended beyond the return 17A by an insulation lip 100 passing between the return 17A and the tube 1.
  • the return 17A is provided with an electrical insulating lining 101 with a U section which completes the electrical insulation produced by the lip 100 of the seal 13 even if the material of the seal 13 is itself an electrical insulator, for that in the event of wear or partial or total tearing of the lip 100, the sleeve 3, generally made of metal, cannot come into electrical contact with the tube 1.
  • the connector only has the lip 102 or the seal 101.
  • the seal 13 is provided with an intermediate lip 102.
  • the seal 213 ends in line with the flange 217 of the sleeve 203 which is surrounded by an insulating lining 201.
  • the seal 213 does not continue with a lip separating the pipe 2 of ledge 217.
  • the seal 313 is extended by a lip 300 surrounding the flange 317 of the sleeve 303 thus isolating the sleeve 303 from the tube 2.
  • the sleeve 3 can be produced in addition to two parts assembled to each other in the manner of the assembly of FIG. 2.
  • the connector according to the invention is of a particularly simple and light construction. Depending on its length and its embodiment, the connector will be fixed by two or four bolts.

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  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Joints With Sleeves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Joints Allowing Movement (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Clamps And Clips (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • External Artificial Organs (AREA)
  • Earth Drilling (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention relates to a coupling for smooth tubes, characterised in that at least one of the ends of the sleeve (3, 103) is provided with a peripheral housing (4, 104A, 104B) for receiving two open gripping rings (8, 9, 108A, 109A, 108B, 109B) of opposite action in order to lock the coupling (3, 103) integrally on the corresponding end (1, 101, 102) of the tube to be coupled. <IMAGE>

Description

L'invention concerne un raccord pour tubes lisses recevant un fluide sous pression, raccord fixé sur l'extrémité de deux tubes par un serrage, sans soudure ni vissage, ce raccord comprenant un manchon extérieur formant une chambre recevant un joint d'étanchéité en forme de tube terminé à chaque extré­mité par une lèvre venant s'appliquer de manière étan­che contre l'extrémité correspondante de tube engagé dans le raccord, sous l'effet de la pression du fluide circulant dans les tubes, des bagues à grippes logées dans le manchon pour s'agripper contre les tubes, un moyen de serrage du manchon pour bloquer le raccord sur les tubes.The invention relates to a connector for smooth tubes receiving a pressurized fluid, connector fixed to the end of two tubes by clamping, without welding or screwing, this connector comprising an outer sleeve forming a chamber receiving a shaped seal. of tubing terminated at each end by a lip which is applied in leaktight manner against the corresponding end of tubing engaged in the fitting, under the effect of the pressure of the fluid circulating in the tubing, of the rings of flu housed in the sleeve to grip against the tubes, a sleeve tightening means to block the fitting on the tubes.

Un tel raccord est connu sous différentes réalisations et il est en particulier décrit aux brevets FR 77 22280 et FR 77 22418.Such a connection is known from different embodiments and is described in particular in patents FR 77 22280 and FR 77 22418.

Les raccords connus de ce type, comportent un manchon extérieur formant une chambre qui reçoit un joint d'étanchéité en forme de tube terminé à chaque extrémité par une lèvre venant s'appliquer de manière étanche contre une extrémité de tube et sous l'effet des ressorts internes et de la pression du fluide circulant dans les tubes. Au niveau de l'extrémité, il est prévu chaque fois une bague à grippes s'appuyant contre le manchon et dont les grippes viennent dans l'extrémité correspondante des deux tubes à raccorder, les grippes des deux bagues agissant en sens opposé. Ainsi, sous l'effet de la dilatation l'extrémité du tube ne peut que pénètrer dans le raccord, alors que le mouvement inverse est interdit par les grippes. De tels raccords sont intéressants car ils permettent de raccorder facilement et de manière démontable des tubes, mais l'un de leurs inconvénients réside dans le fait qu'ils ne permettent pas d'absorber les effets de la dilatation des tubes si bien qu'il faut des élé­ments de dilatation sur les tuyauteries.Known fittings of this type include an outer sleeve forming a chamber which receives a tube-shaped seal terminated at each end by a lip which is applied sealingly against one end of the tube and under the effect of internal springs and the pressure of the fluid circulating in the tubes. At the end, it is provided each time an influenza ring pressing against the sleeve and whose grippers come into the corresponding end of the two tubes to be connected, the grippers of the two rings acting in opposite directions. Thus, under the effect of expansion, the end of the tube can only penetrate into the fitting, while reverse movement is prohibited by the grippers. Such fittings are advantageous because they allow tubes to be easily and dismountably connected, but one of their drawbacks lies in the fact that they do not allow the effects of the expansion of the tubes to be absorbed so that it expansion elements are required on the pipes.

De plus, de tels raccords ne sont pas suffi­samment fiables pour certaines tuyauteries par exemple les tuyauteries d'alimentation en eau des dispositifs de protection contre le feu.In addition, such connections are not sufficiently reliable for certain pipes, for example the water supply pipes for fire protection devices.

Dans ce dernier cas les tuyaux sont réunis par des bagues venant s'accrocher dans une gorge usi­née à chaque extrémité des tuyaux à raccorder. Or, cette solution est onéreuse à cause de l'usinage des gorges et présente en outre l'inconvénient d'affaiblir les tuyaux ou de nécessiter des tubes plus épais.In the latter case, the pipes are joined by rings which hang in a machined groove at each end of the pipes to be connected. However, this solution is expensive because of the machining of the grooves and has the further disadvantage of weakening the pipes or requiring thicker tubes.

La présente invention a pour but de remédier aux inconvénients des solutions connues et se propose de créer un raccord de fabrication et de montage simples et permettant soit d'absorber les effets de dilatation des tubes sans nécessiter de joint de dila­tation soit d'assurer un excellent accrochage sur l'extrémité des deux tubes à raccorder.The object of the present invention is to remedy the drawbacks of known solutions and proposes to create a connector for simple manufacture and assembly which makes it possible either to absorb the effects of expansion of the tubes without requiring an expansion joint or to ensure excellent hanging on the end of the two tubes to be connected.

A cet effet, l'invention concerne un raccord du type ci-dessus caractérisé en ce qu'au moins l'une des extrémités du manchon est munie d'un logement périphérique pour recevoir deux bagues à grippes ouvertes à action opposée, pour bloquer le raccord solidairement sur l'extrémité correspondante du tube à raccorder.To this end, the invention relates to a connector of the above type characterized in that at least one of the ends of the sleeve is provided with a peripheral housing for receiving two open-action gripper rings with opposite action, to block the connection integrally on the corresponding end of the tube to be connected.

Le raccord peut se bloquer soit sur l'une soit sur les deux extrémités des tubes à raccorder.The connector can be blocked either on one or on both ends of the tubes to be connected.

Dans le cas de l'accrochage sur une extrémi­té seulement, l'efficacité de l'accrochage permet de ne prévoir qu'une liaison étanche sur l'extrémité de l'autre tube sans risquer que le raccord se déplace sous l'effet des alternances de dilatations et de con­tractions des tubes.In the case of attachment on one end only, the effectiveness of the attachment makes it possible to provide only a sealed connection on the end of the other tube without risking that the connector moves under the effect of alternations tube expansions and contractions.

Dans le cas de l'accrochage sur l'extrémité des deux tubes, l'accrochage ainsi réalisé par les deux paires de bagues à grippes, à action opposée, permet de réaliser des liaisons en sécurité et de supprimer les gorges dans l'extrémité des tubes.In the case of attachment to the end of the two tubes, the attachment thus produced by the two pairs of gripper rings, with opposite action, makes it possible to make secure connections and to remove the grooves in the end of the tubes.

De plus, dans tous les cas, les raccords permettent d'absorber les défauts d'alignement des tubes raccordés.In addition, in all cases, the connections make it possible to absorb the misalignments of the connected tubes.

Grâce à sa simplicité, sans que cela ne soit au détriment de l'efficacité, le raccord selon l'in­vention est très léger et peu encombrant ce qui est avantageux voire déterminant dans de nombreuses appli­cations.Thanks to its simplicity, without this being to the detriment of efficiency, the connector according to the invention is very light and compact, which is advantageous or even decisive in many applications.

De manière plus détaillée, une seule des extrémités du manchon est munie d'un logement périphé­rique pour recevoir deux bagues à grippes à action opposée pour bloquer le raccord solidairement sur l'extrémité correspondante du tube à raccorder, l'ex­trémité de l'autre tube pouvant coulisser librement dans le manchon en étant seulement en contact avec la lèvre correspondante du joint.In more detail, only one of the ends of the sleeve is provided with a peripheral housing for receiving two opposing action rings for grippers to lock the connection integrally on the corresponding end of the tube to be connected, the end of the other tube able to slide freely in the sleeve while being only in contact with the corresponding lip of the seal.

Comme l'une des extrémités du manchon exté­rieur du raccord comporte les bagues à grippes agissant dans des directions opposées, on a ainsi un point fixe formé par un accrochage solidaire, mais démontable du raccord sur l'extrémité de l'un des tubes, alors que l'extrémité de l'autre tube pénètre librement dans le raccord en n'étant soumise qu'à l'action de la lèvre d'étanchéité du manchon. Cette lèvre permet, quelle que soit la pression du fluide de la conduite, le coulissement axial de l'extrémité du tube correspondant et par suite la prise en compte des phénomènes de dilatation et de contraction sous l'effet des variations de température environnante ou du fluide circulant dans les tubes.As one end of the outer sleeve of the connector has the gripper rings acting in opposite directions, there is thus a fixed point formed by an integral attachment, but removable from the fitting on the end of one of the tubes, while the end of the other tube freely penetrates into the fitting, being subjected only to the action of the sealing lip of the sleeve. This lip allows, whatever the pressure of the fluid in the pipe, the axial sliding of the end of the corresponding tube and consequently the taking into account of the phenomena of expansion and contraction under the effect of variations in the surrounding temperature or fluid circulating in the tubes.

De façon particulièrement avantageuse le manchon est en forme de deux coquilles réunies par les boulons.In a particularly advantageous manner, the sleeve is in the form of two shells joined by the bolts.

Suivant une autre caractéristique, les deux extrémités du manchon sont munies d'un logement péri­phérique pour recevoir chacun deux bagues à grippes à action opposée pour bloquer le raccord solidairement sur l'extrémité correspondante de chacun des deux tubes à raccorder.According to another characteristic, the two ends of the sleeve are provided with a peripheral housing to each receive two opposing-action gripper rings for blocking the connection integrally on the corresponding end of each of the two tubes to be connected.

Suivant une autre caractéristique, le loge­ment présente des surfaces d'appui pour soutenir des bagues à grippes dans des positions inclinées pour exercer une action opposée.According to another characteristic, the housing has bearing surfaces to support the fluke rings in inclined positions to exert an opposite action.

Suivant une autre caractéristique, les surfaces d'appui du logement périphérique sont consti­tuées par les parois du logement à section trapézoïda­le.According to another characteristic, the bearing surfaces of the peripheral housing are formed by the walls of the housing with trapezoidal section.

Suivant une autre caractéristique, les deux bagues à grippes de chaque logement sont séparées dans le logement par un jonc de section circulaire ou trapézoïdale.According to another characteristic, the two claw rings of each housing are separated in the housing by a rod of circular or trapezoidal section.

Suivant une autre caractéristique, le retour est muni d'une garniture isolante électrique à section en U.According to another characteristic, the return is provided with an electrical insulating packing with U-shaped section.

Ces caractéristiques sont particulièrement intéressantes pour isoler électriquement deux tubes 1, 2 ou ensembles de tubes. Le raccord permet ainsi de supprimer des raccords isolants extrêmement compliqués et coûteux, d'une mise en place délicate et d'une fiabilité réduite par leur complexité.These characteristics are particularly interesting for electrically isolating two tubes 1, 2 or sets of tubes. The connector thus makes it possible to eliminate extremely complicated and expensive insulating connectors, which are difficult to install and whose reliability is reduced by their complexity.

En résumé, le joint selon l'invention tient aux vibrations et à des pressions allant jusqu'à 40 bars. Son encombrement est extrêmement faible. Dimensionné de manière appropriée, il s'utilise sur n'importe quelle tuyauterie et son installation est très rapide. Elle ne nécessite pas de préparation des extrémités des tubes et permet également d'absorber un certain décalage angulaire ou en parallaxe de l'extré­mité des tubes.In summary, the seal according to the invention is due to vibrations and pressures up to 40 bars. Its size is extremely small. Sized appropriately, it can be used on any pipe and its installation is very fast. It does not require preparation of the ends of the tubes and also makes it possible to absorb a certain angular or parallax offset from the end of the tubes.

La présente invention sera décrite de manié­re plus détaillée à l'aide des dessins annexés, dans lesquels :

  • - la figure 1 est une vue en coupe de deux extrémités de tubes réunies par un raccord selon un premier mode de réalisation de l'invention ;
  • - la figure 2 est une vue en coupe axiale d'un exemple de réalisation du manchon extérieur en deux parties à la manière d'un collier.
  • - la figure 3 est une demi-vue en coupe de l'extrémité de deux tubes munie d'un raccord selon un second mode de réalisation de l'invention.
  • - la figure 4 montre une autre variante de raccord selon l'invention.
  • - la figure 5 est une autre variante de la figure 1 représentée seulement pour la partie corres­pondant à l'isolation électrique.
  • - la figure 6 est une autre variante dont seule est représentée la partie réalisant l'isolation électrique.
The present invention will be described in more detail with the aid of the appended drawings, in which:
  • - Figure 1 is a sectional view of two ends of tubes joined by a connector according to a first embodiment of the invention;
  • - Figure 2 is an axial sectional view of an embodiment of the outer sleeve in two parts in the manner of a collar.
  • - Figure 3 is a half-sectional view of the end of two tubes provided with a connector according to a second embodiment of the invention.
  • - Figure 4 shows another variant of the connector according to the invention.
  • - Figure 5 is another variant of Figure 1 shown only for the part corresponding to the electrical insulation.
  • - Figure 6 is another variant of which only is shown the part providing electrical insulation.

Selon la figure 1, un premier mode de réali­ sation d'un raccord de l'invention est destiné à réunir deux extrémités 1 et 2 de deux tubes. Inten­tionnellement les extrémités des deux tubes 1, 2 ne sont pas représentées jointives, mais écartées d'une distance e, variable en fonction par exemple de la dilatation ou de la contraction des tubes.According to Figure 1, a first embodiment sation of a connector of the invention is intended to join two ends 1 and 2 of two tubes. Intentionally the ends of the two tubes 1, 2 are not shown to be contiguous, but spaced apart by a distance e , which varies depending for example on the expansion or contraction of the tubes.

Ce raccord se compose d'un manchon extérieur 3 terminé à l'une de ses extrémités, par exemple l'ex­trémité gauche, par un logement périphérique 4 rece­vant deux bagues à grippes, ouvertes 5 et 6. Dans ce mode de réalisation, les deux bagues sont séparées par un jonc ouvert 7 de section trapézoïdale ou circulai­re, les parois 8 et 9 du logement périphérique 4 étant elles-mêmes inclinées, la section du logement étant trapézoïdale.This connection consists of an outer sleeve 3 terminated at one of its ends, for example the left end, by a peripheral housing 4 receiving two open, gripped rings 5 and 6. In this embodiment, the two rings are separated by an open rod 7 of trapezoidal or circular section, the walls 8 and 9 of the peripheral housing 4 being themselves inclined, the section of the housing being trapezoidal.

Ainsi les bagues 5 et 6 sont maintenues au montage, dans une position inclinée, opposée, grâce au jonc ouvert 7, contre les parois 8 et 9.Thus the rings 5 and 6 are maintained during assembly, in an inclined, opposite position, thanks to the open rod 7, against the walls 8 and 9.

De manière générale les parois inclinées du logement périphérique 4 forment des surfaces d'appui pour les bagues à grippes ; en d'autres termes, les parois du logement périphérique pourraient avoir une forme différente de celle ci-dessus à condition de former des surfaces d'appui maintenant les bagues à grippes dans la position inclinée comme indiqué ci-­dessus.In general, the inclined walls of the peripheral housing 4 form bearing surfaces for the fluke rings; in other words, the walls of the peripheral housing could have a shape different from that above provided that they form bearing surfaces keeping the claw rings in the inclined position as indicated above.

Ainsi, dans certains cas, la section du logement peut être en forme de triangle, de polygone ou encore de forme courbe, sans que de telles formes ne soient limitatives.Thus, in certain cases, the section of the housing can be in the form of a triangle, a polygon or even a curved shape, without such shapes being limiting.

Pour permettre le serrage sur le tube ces bagues ouvertes se terminent à leur partie inférieure par des arêtes 10, 11, vives formant des grippes. Ces arêtes sont destinées à venir s'enfoncer dans la paroi de l'extrémité du tube 1 lors du serrage axial du man­ chon 3.To allow clamping on the tube, these open rings terminate at their lower part with sharp edges 10, 11 forming claws. These edges are intended to sink into the wall of the end of the tube 1 during the axial tightening of the man chon 3.

A côté du logement périphérique 4, le man­chon extérieur 3 est muni d'un logement périphérique 12 d'une certaine longueur axiale contenant un joint 13 formé d'un manchon élastique terminé à chaque extrémité par des lèvres 14, 15. Les lèvres 14, 15 s'appuient l'une sur l'extrémité du tube 1, l'autre sur l'extrémité du tube 2. A l'intérieur de ce joint, il y a une cavité 16 dans laquelle arrive le fluide sous pression circulant dans les tubes 1, 2. La pres­sion applique le manchon élastique et les lèvres 14, 15 du joint 13 contre le manchon 3, et contre les extrémités des tubes 1, 2 assurant ainsi l'étanchéité. Le cas échéant on a de manière complémentaire des res­sorts 30, 31.Next to the peripheral housing 4, the outer sleeve 3 is provided with a peripheral housing 12 of a certain axial length containing a seal 13 formed by an elastic sleeve terminated at each end by lips 14, 15. The lips 14, 15 are supported one on the end of the tube 1, the other on the end of the tube 2. Inside this joint, there is a cavity 16 into which arrives the pressurized fluid circulating in the tubes 1, 2. The pressure applies the elastic sleeve and the lips 14, 15 of the seal 13 against the sleeve 3, and against the ends of the tubes 1, 2 thus ensuring sealing. Where appropriate, springs 30, 31 are provided in addition.

En partie droite selon la figure 1, le man­chon extérieur 3 est terminé par un retour 17 qui sert d'appui à la partie droite du joint 13, le contour du logement annulaire 4 servant d'appui à gauche pour le joint 13.In the right part according to FIG. 1, the outer sleeve 3 is terminated by a return 17 which serves as a support for the right part of the seal 13, the contour of the annular housing 4 serving as a left support for the seal 13.

Comme ce raccord n'a qu'un point (ou double ligne périphérique) d'accrochage solidaire par exemple sur le tube 1, l'extrémité du raccord située au niveau du tube 2 n'assure qu'une fonction d'étanchéité mais non une fonction de blocage. Les tubes 1, 2 peuvent donc se rapprocher ou s'écarter en fonction des dila­tations ou contractions, engendrées par les variations de température du fluide ou de la température environ­nante.As this connector has only one point (or double peripheral line) for integral attachment, for example to the tube 1, the end of the connector located at the level of the tube 2 provides only a sealing function but not a blocking function. The tubes 1, 2 can therefore approach or move apart as a function of the expansions or contractions generated by the variations in temperature of the fluid or of the surrounding temperature.

Ainsi, le raccord assure non seulement de manière simple l'étanchéité entre deux extrémités de tubes, mais il permet également d'absorber les dilata­tions.Thus, the connector not only provides a simple seal between two ends of the tubes, but it also makes it possible to absorb the expansions.

Selon l'invention, le manchon 3, les bagues à grippes 8, 9 et le jonc 7 sont des organes périphé­ riques, ouverts, c'est-à-dire non continus de façon à permettre la compression radiale du manchon 3 par exemple par des boulons, pour assurer l'enfoncement des bagues à grippes 8, 9 dans l'extrémité 1 du tube et par suite le blocage du raccord sur cette extrémité de tube.According to the invention, the sleeve 3, the claw rings 8, 9 and the ring 7 are peripheral members risks, open, that is to say non-continuous so as to allow the radial compression of the sleeve 3 for example by bolts, to ensure the insertion of the rings of influenza 8, 9 in the end 1 of the tube and by following the blocking of the fitting on this end of the tube.

La figure 2 montre en coupe une variante de réalisation du manchon extérieur. Ce manchon est constitué de deux parties 20, 21 terminées à chaque extrémité par des pattes 22, 23 et 24, 25 réunies par des boulons 26, 27. Pour éviter que le joint élastique ne puisse venir dans l'intervalle des pattes 22, 23 et 24, 25 des deux parties du manchon extérieur, chaque partie 20, 21 se termine par une surface de guidage 28, 29 coopérant avec des surfaces de guidage corres­pondantes non représentées de l'autre partie pour assurer une certaine continuité à la jonction des deux parties 20, 21 fermant l'intervalle entre les pattes 22, 23, et 24, 25.Figure 2 shows in section an alternative embodiment of the outer sleeve. This sleeve consists of two parts 20, 21 terminated at each end by lugs 22, 23 and 24, 25 joined by bolts 26, 27. To prevent the elastic seal from coming into the gap between the lugs 22, 23 and 24, 25 of the two parts of the outer sleeve, each part 20, 21 ends in a guide surface 28, 29 cooperating with corresponding guide surfaces not shown on the other part to ensure a certain continuity at the junction of the two parts 20, 21 closing the gap between the legs 22, 23, and 24, 25.

Toutefois, d'autres modes de réalisation du manchon extérieur sont envisageables. Ce manchon peut également être réalisé en deux parties articulées l'une à l'autre par une charnière et dont les autres extrémités sont réunies par des boulons de serrage.However, other embodiments of the outer sleeve can be envisaged. This sleeve can also be produced in two parts articulated to one another by a hinge and the other ends of which are joined by tightening bolts.

La figure 3 montre un autre mode de réalisa­tion de l'invention, assurant le blocage du raccord sur l'extrémité de chacun des deux tubes 101, 102, à réunir. Le raccord comprend un manchon extérieur 103 terminé à chacune de ses extrémités par un logement périphérique 104A, 104B recevant chacun deux bagues à grippes 105A, 106A ; 105B, 106B, les bagues sont ouvertes et séparées par un jonc ouvert 107A, 107B de section par exemple circulaire ou trapézoïdale. Les parois 108A, 109A ; 108B, 109B des logements 104A, 104B forment des surfaces d'appui inclinées pour les bagues à grippes. Les parois des logements 104A, 104B peuvent former elles-mêmes les surfaces d'appui comme dans le présent exemple ; la section des logements périphériques est alors de préférence triangulaire ou trapézoïdale.Figure 3 shows another embodiment of the invention, ensuring the locking of the connector on the end of each of the two tubes 101, 102, to be joined. The connector comprises an outer sleeve 103 terminated at each of its ends by a peripheral housing 104A, 104B each receiving two flange rings 105A, 106A; 105B, 106B, the rings are open and separated by an open ring 107A, 107B of section, for example circular or trapezoidal. The walls 108A, 109A; 108B, 109B of the housings 104A, 104B form inclined bearing surfaces for the flu rings. The walls of the housings 104A, 104B can themselves form the bearing surfaces as in the present example; the section of the peripheral housings is then preferably triangular or trapezoidal.

Les bagues à grippes 108A, 109A, 108B, 109B sont analogues ou identiques aux bagues à grippes du premier mode de réalisation ; elles se terminent à leur partie inférieure par des arêtes 110A, 111A, 110B, 111B formant des grippes qui s'accrochent dans la paroi des tubes lors du serrage axial du manchon 103.The fluke rings 108A, 109A, 108B, 109B are analogous or identical to the fluke rings of the first embodiment; they end at their lower part with ridges 110A, 111A, 110B, 111B forming grippers which hang in the wall of the tubes during the axial tightening of the sleeve 103.

Il est à remarquer ici que l'accrochage des arêtes des bagues dans les tubes assure le blocage du raccord tout en créant un certain effet d'articulation des ensembles (bagues/jonc) permettant d'absorber d'éventuels jeux ou défauts d'alignement.It should be noted here that the hooking of the edges of the rings in the tubes ensures the blocking of the connector while creating a certain articulation effect of the assemblies (rings / rod) making it possible to absorb any play or misalignment .

Le manchon 103 possède également un logement périphérique 112 relativement long par rapport aux parties munies des logements périphériques 104A, 104B. Le logement reçoit un joint 113 du type de celui exa­miné ci-dessus, avec deux lèvres 114, 115 s'appuyant sur l'extrémité de chaque tube 101, 102. Le joint com­porte également une cavité 116 et des joncs 130, 131 peuvent être prévus pour les lèvres 114, 115.The sleeve 103 also has a relatively long peripheral housing 112 relative to the parts provided with the peripheral housings 104A, 104B. The housing receives a seal 113 of the type examined above, with two lips 114, 115 resting on the end of each tube 101, 102. The seal also includes a cavity 116 and rods 130, 131 can be provided for the lips 114, 115.

Le second mode de réalisation du raccord selon l'invention convient notamment pour des applica­tions dans lesquelles le raccord doit être fixé soli­dairement aux extrémités des tubes sans avoir à compenser les contractions et les dilatations, celles-­ci étant reçues par un moyen particulier prévu sur les tuyaux.The second embodiment of the connector according to the invention is particularly suitable for applications in which the connector must be fixed integrally to the ends of the tubes without having to compensate for contractions and expansions, the latter being received by a particular means provided on the pipes.

La figure 4 montre une autre variante de l'invention constituant un raccord électriquement isolant. Dans la description de cette variante, on a utilisé les mêmes références qu'à la figure 1 pour désigner les mêmes éléments dont la description ne sera pas reprise.Figure 4 shows another variant of the invention constituting an electrically insulating connection. In the description of this variant, we have used the same references as in FIG. 1 to designate the same elements, the description of which will not be repeated.

En variante à la figure 1, le retour 17A définit une ouverture de diamétre nettement plus grand que le diamètre du tube 2. Le bord du retour 17A bor­dant l'ouverture est arrondi ou à congé, c'est-à-dire sans arêtes vives.As a variant in FIG. 1, the return 17A defines an opening of diameter significantly larger than the diameter of the tube 2. The edge of the return 17A bordering the opening is rounded or at a fillet, that is to say without sharp edges .

Le joint 13 se prolonge au-delà du retour 17A par une lèvre d'isolation 100 passant entre le retour 17A et le tube 1.The seal 13 is extended beyond the return 17A by an insulation lip 100 passing between the return 17A and the tube 1.

Selon une variante, le retour 17A est muni d'une garniture isolante électrique 101 à section en U qui complète l'isolation électrique réalisée par la lèvre 100 du joint 13 même si le matériau du joint 13 est lui-même un isolant électrique, pour qu'en cas d'usure ou d'arrachage partiel ou total de la lèvre 100, le manchon 3, en général en métal, ne puisse entrer en contact électrique avec le tube 1.According to a variant, the return 17A is provided with an electrical insulating lining 101 with a U section which completes the electrical insulation produced by the lip 100 of the seal 13 even if the material of the seal 13 is itself an electrical insulator, for that in the event of wear or partial or total tearing of the lip 100, the sleeve 3, generally made of metal, cannot come into electrical contact with the tube 1.

Suivant une variante, le raccord ne comporte que la lèvre 102 ou que le joint 101.According to a variant, the connector only has the lip 102 or the seal 101.

De plus, pour éviter tout risque de contact entre les deux tubes 1 et 2, le joint 13 est muni d'une lèvre intermédiaire 102.In addition, to avoid any risk of contact between the two tubes 1 and 2, the seal 13 is provided with an intermediate lip 102.

Les figures 5 et 6 explicitent les deux va­riantes évoquées ci-dessus.Figures 5 and 6 explain the two variants mentioned above.

Ainsi, dans le cas de la figure 5, le joint 213 se termine au droit du rebord 217 du manchon 203 qui est entouré d'une garniture isolante 201. Dans cette variante, le joint 213 ne se poursuit pas par une lèvre séparant le tuyau 2 du rebord 217.Thus, in the case of FIG. 5, the seal 213 ends in line with the flange 217 of the sleeve 203 which is surrounded by an insulating lining 201. In this variant, the seal 213 does not continue with a lip separating the pipe 2 of ledge 217.

Dans la variante de la figure 6, le joint 313 se prolonge par une lèvre 300 entourant le rebord 317 du manchon 303 isolant ainsi le manchon 303 du tube 2.In the variant of FIG. 6, the seal 313 is extended by a lip 300 surrounding the flange 317 of the sleeve 303 thus isolating the sleeve 303 from the tube 2.

Enfin, il convient de souligner que le raccord une fois mis en place peut être enrobé d'une résine.Finally, it should be noted that once the fitting is in place, it can be coated with a resin.

De manière générale, dans les modes de réalisation ci-dessus et surtout dans le cas des dia­mètres importants, le manchon 3 peut être réalisé en plus de deux parties assemblées les unes aux autres à la manière de l'assemblage de la figure 2.In general, in the above embodiments and especially in the case of large diameters, the sleeve 3 can be produced in addition to two parts assembled to each other in the manner of the assembly of FIG. 2.

Il est à remarquer que le raccord selon l'invention est d'une construction particulièrement simple et légère. Suivant sa longueur et son mode de réalisation, le raccord sera fixé par deux ou quatre boulons.It should be noted that the connector according to the invention is of a particularly simple and light construction. Depending on its length and its embodiment, the connector will be fixed by two or four bolts.

Claims (9)

1°) Raccord pour tubes lisses recevant un fluide sous pression, raccord fixé sur l'extrémité de deux tubes (1, 2, 101, 102) par un serrage, sans sou­dure ni vissage, raccord comprenant :
- un manchon extérieur (3, 103) formant une chambre (16, 116) recevant un joint d'étanchéité (13, 113) en forme de manchon élastique terminé de chaque côté par une lèvre (15, 16, 115, 116) venant s'appli­quer de manière étanche contre l'extrémité correspon­dante du tube (1, 2, 101, 102) engagée dans le raccord (3, 103) sous l'effet de la pression du fluide circu­lant dans les tubes,
- des bagues à grippes logées dans le man­chon (3, 103) pour s'agripper contre les tubes (1, 2, 101, 102),
- un moyen de serrage (22, 23, 24, 25, 26, 27) du manchon (3, 103) pour bloquer le raccord sur les tubes,
raccord caractérisé en ce qu'au moins l'une des extré­mités du manchon (3, 103) est munie d'un logement périphérique (4, 104A, 104B) pour recevoir deux bagues à grippes ouvertes (8, 9, 108A, 109A, 108A, 109B) à action opposée, pour bloquer le raccord (3, 103) soli­dairement sur l'extrémité (1, 101, 102) correspondante du tube à raccorder.1) Connection for smooth tubes receiving a pressurized fluid, connection fixed on the end of two tubes (1, 2, 101, 102) by clamping, without welding or screwing, connection comprising:
- an outer sleeve (3, 103) forming a chamber (16, 116) receiving a seal (13, 113) in the form of an elastic sleeve terminated on each side by a lip (15, 16, 115, 116) coming apply sealingly against the corresponding end of the tube (1, 2, 101, 102) engaged in the fitting (3, 103) under the effect of the pressure of the fluid flowing in the tubes,
- gripper rings housed in the sleeve (3, 103) for gripping against the tubes (1, 2, 101, 102),
a clamping means (22, 23, 24, 25, 26, 27) of the sleeve (3, 103) to block the connection on the tubes,
fitting characterized in that at least one of the ends of the sleeve (3, 103) is provided with a peripheral housing (4, 104A, 104B) for receiving two open gripper rings (8, 9, 108A, 109A, 108A, 109B) with opposite action, for locking the connector (3, 103) integrally on the corresponding end (1, 101, 102) of the tube to be connected. 2°) Raccord selon la revendication 1, carac­térisé en ce qu'une seule des extrémités du manchon (3) est munie d'un logement périphérique (4) pour recevoir deux bagues à grippes (7, 8) à action opposée pour bloquer le raccord (3) solidairement sur l'extré­mité correspondante du tube (1) à raccorder, l'extré­mité de l'autre tube (2) pouvant coulisser librement dans le manchon (3) en étant seulement en contact avec la lèvre (15) correspondante du joint (13).2 °) fitting according to claim 1, characterized in that only one of the ends of the sleeve (3) is provided with a peripheral housing (4) to receive two gripping rings (7, 8) with opposite action to block the fitting (3) integrally on the corresponding end of the tube (1) to be connected, the end of the other tube (2) being able to slide freely in the sleeve (3) while being only in contact with the corresponding lip (15) of the seal (13). 3°) Raccord selon la revendication 1, carac­térisé en ce que les deux extrémités du manchon (103) sont munies d'un logement périphérique (104A, 104B) pour recevoir chacun deux bagues à grippes (108A, 109A, 108B, 109B) à action opposée pour bloquer le raccord (103) solidairement sur l'extrémité correspon­dante de chacun des deux tubes à raccorder (101, 102).3 °) fitting according to claim 1, characterized in that the two ends of the sleeve (103) are provided with a peripheral housing (104A, 104B) for each receiving two rings of flu (108A, 109A, 108B, 109B) to opposite action to lock the connector (103) integrally on the corresponding end of each of the two tubes to be connected (101, 102). 4°) Raccord selon la revendication 1, carac­térisé en ce que le manchon est en forme de deux coquilles (20, 21) réunies par des boulons (26, 27).4 °) fitting according to claim 1, characterized in that the sleeve is in the form of two shells (20, 21) joined by bolts (26, 27). 5°) Raccord selon la revendication 1, carac­térisé en ce que le logement présente des surfaces d'appui (8, 9, 106A, 107A, 106B, 107B) pour soutenir des bagues à grippes (108A, 109A, 108B, 109B) dans des positions inclinées pour exercer une action opposée.5 °) fitting according to claim 1, characterized in that the housing has bearing surfaces (8, 9, 106A, 107A, 106B, 107B) for supporting the fluenza rings (108A, 109A, 108B, 109B) in tilted positions to exert an opposite action. 6°) Raccord selon la revendication 5, carac­térisé en ce que les surfaces d'appui du logement périphérique sont constituées par les parois du loge­ment à section trapézoïdale (4, 104A, 104B).6 °) fitting according to claim 5, characterized in that the bearing surfaces of the peripheral housing are constituted by the walls of the housing with trapezoidal section (4, 104A, 104B). 7°) Raccord selon la revendication 1, carac­térisé en ce que les deux bagues à grippes de chaque logement sont séparées dans le logement par un jonc de section circulaire ou trapézoïdale (7, 107A, 107B).7 °) fitting according to claim 1, characterized in that the two claw rings of each housing are separated in the housing by a ring of circular or trapezoidal section (7, 107A, 107B). 8°) Raccord selon les revendications 1 et 2, caractérisé en ce que le retour (17A) du manchon (3) dégage une ouverture d'un diamètre nettement supérieur au diamètre du tube (2) à recevoir pour former un intervalle annulaire et le joint (13) est prolongé par une lèvre (100) d'isolation électrique faisant corps avec le joint (13) et passant dans cet intervalle.8 °) fitting according to claims 1 and 2, characterized in that the return (17A) of the sleeve (3) releases an opening of a diameter significantly greater than the diameter of the tube (2) to be received to form an annular gap and the seal (13) is extended by a lip (100) of electrical insulation integral with the seal (13) and passing in this interval. 9°) Raccord selon les revendications 1, 2 et 8, caractérisé en ce que le retour (17A) est muni d'une garniture isolante électrique (101) à section en U.9 °) fitting according to claims 1, 2 and 8, characterized in that the return (17A) is provided with an electrical insulating packing (101) with U-section.
EP88402660A 1988-09-09 1988-10-21 Coupling for butt-joining tubes Expired - Lifetime EP0360946B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88402660T ATE71197T1 (en) 1988-09-09 1988-10-21 PIPE CONNECTION FOR SMOOTH PIPES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8811810 1988-09-09
FR8811810A FR2636402B1 (en) 1988-09-09 1988-09-09 CONNECTION FOR SMOOTH TUBES

Publications (2)

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EP0360946A1 true EP0360946A1 (en) 1990-04-04
EP0360946B1 EP0360946B1 (en) 1992-01-02

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US (1) US5094492A (en)
EP (1) EP0360946B1 (en)
JP (1) JPH02107886A (en)
KR (1) KR900005112A (en)
CN (1) CN1013616B (en)
AT (1) ATE71197T1 (en)
AU (1) AU4114889A (en)
BR (1) BR8904513A (en)
DE (1) DE3867478D1 (en)
ES (1) ES2029724T3 (en)
FR (1) FR2636402B1 (en)
PT (1) PT91670B (en)

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CN102853184A (en) * 2012-04-20 2013-01-02 葛文宇 Movable joint type middle-high pressure pipeline connection part
US10077621B2 (en) 2013-06-13 2018-09-18 Vetco Gray, LLC Diverter flow line insert packer seal
CN106481906A (en) * 2015-09-01 2017-03-08 李天兵 A kind of pipe joint of stainless steel tube
US20200049285A1 (en) * 2018-08-09 2020-02-13 Altura Manufacturing, LLC Pipe coupling
EP3719368B1 (en) * 2019-04-02 2023-01-11 Crompton Technology Group Limited Electrical isolator and corresponding forming method
EP3719371B1 (en) * 2019-04-02 2022-07-20 Crompton Technology Group Limited Electrical isolator
FR3105338B1 (en) * 2019-12-23 2021-12-10 Yves Levivier Self-locking device for fixing a flexible sleeve on a smooth tube
CN111520551B (en) * 2020-04-28 2021-11-30 济宁聚能热力保温建材有限公司 Improved connecting piece for directly-buried heat-insulating pipeline

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FR2672371A1 (en) * 1991-02-04 1992-08-07 Pont A Mousson COMPOSITE SLEEVE, PROCESS FOR IMPLEMENTING SAME, AND SEAL WITH APPLICATION.
EP0499561A1 (en) * 1991-02-04 1992-08-19 Pont-A-Mousson S.A. A multi-piece collar, installation procedure and sealing element for same
US5562313A (en) * 1993-11-26 1996-10-08 Invention Machine Corporation Threadless connector for electrical conduits
EP0931966A1 (en) * 1998-01-24 1999-07-28 Rasmussen GmbH Tensionable coupling for pipes
US6206434B1 (en) 1998-01-24 2001-03-27 Rasmussen Gmbh Clampable pipe coupling
US7712796B2 (en) 2004-05-14 2010-05-11 Victaulic Company Deformable mechanical pipe coupling
US8646165B2 (en) 2004-05-14 2014-02-11 Victaulic Company Method of securing pipe elements end to end
US7086131B2 (en) 2004-05-14 2006-08-08 Victaulic Company Deformable mechanical pipe coupling
US8819914B2 (en) 2006-06-07 2014-09-02 Victaulic Company Method of securing pipe elements in end to end relation
US10036493B2 (en) 2008-06-30 2018-07-31 Anvil International, Llc Slip on groove coupling with multiple sealing gasket
US10047885B2 (en) 2008-06-30 2018-08-14 Anvil International, Llc Slip on groove coupling with multiple sealing gasket
US10215284B2 (en) 2011-01-11 2019-02-26 Parker-Hannifin Corporation Flowline divertor seal with spring-energized sealing lips
WO2012096755A1 (en) * 2011-01-11 2012-07-19 Parker-Hannifin Corporation Flowline divertor seal with spring-energized lips
US9631746B2 (en) 2012-01-20 2017-04-25 Anvil International, Llc Coupling with tongue and groove
US10274115B2 (en) 2012-01-20 2019-04-30 Anvil International, Llc Coupling with tongue and groove
US10288200B2 (en) 2012-01-20 2019-05-14 Anvil International, Llc Coupling with tongue and groove
US10385997B2 (en) 2012-01-20 2019-08-20 Anvil International, Llc Slip-on coupling gasket
US10641421B2 (en) 2012-01-20 2020-05-05 Anvil International, Llc Coupling gasket with multiple sealing surfaces
US11365835B2 (en) 2012-01-20 2022-06-21 ASC Engineered Solutions, LLC Coupling gasket with multiple sealing surfaces
US11739869B2 (en) 2012-01-20 2023-08-29 ASC Engineered Solutions, LLC Coupling gasket with multiple sealing surfaces
US10207320B2 (en) 2012-11-02 2019-02-19 Anvil International, Llc Coupling with extending parting line

Also Published As

Publication number Publication date
PT91670B (en) 1995-08-09
FR2636402A1 (en) 1990-03-16
AU4114889A (en) 1990-03-15
ES2029724T3 (en) 1992-09-01
JPH02107886A (en) 1990-04-19
DE3867478D1 (en) 1992-02-13
KR900005112A (en) 1990-04-13
ATE71197T1 (en) 1992-01-15
EP0360946B1 (en) 1992-01-02
US5094492A (en) 1992-03-10
CN1041213A (en) 1990-04-11
CN1013616B (en) 1991-08-21
BR8904513A (en) 1990-04-24
PT91670A (en) 1990-03-30
FR2636402B1 (en) 1991-02-22

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